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Precision Software Appli…tions Silver Collection 4
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Precision Software Applications Silver Collection Volume 4 (1993).iso
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hepcat08.arj
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HEPCATJR.TBL
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1990-01-16
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Table of HEPCAT
Operations, Functions, and Commands
This table shows the key you need to press to perform each
operation, function or command; an abbreviation that will appear
in the HEPCAT window when the key is typed; and an explanation of
what will happen.
Floating Point Operations and Commands
Key Abbreviation Explanation
+ + Add X to Y, result in X. On a Z-100,
you can use Keypad Enter for +.
- - Subtract Y from X, result in X.
* * Multiply X by Y, result in X. You can
also use Shift-keypad +.
/ / Divide X by Y, result in X. You can
also use Shift-keypad - or \.
^ ^ Raise X to Y power, result in X.
< RTP Convert rectangular coordinates X and Y
to polar coordinates. Both results are
shown on the screen. Returns r in X,
theta in Y.
# PTR Convert polar coordinates r (in X) and
theta (in Y) to rectangular.
D D/R: x Switch angle measurement mode between
degrees and radians.
Lf Arrow Move the decimal left one place. Works
in fixed point mode only. The range is
2 to 8 places after the decimal. The
fixed point number can be up to 16 dig-
its long, with 8 significant digits.
Rt Arrow Move the decimal right one place. Works
in fixed point mode only.
Floating Point Functions
Floating point functions (except PI) are performed on the number
(n) currently displayed in the window, and the value calculated
replaces that number.
P PI Insert the value PI (3.1415926) as if it
had been typed in.
! FACT Compute the factorial of n.
Q SQRT Calculate the square root of n.
S SIN Compute the sine of n.
Shift-S ASIN Compute the arc sine of n.
C COS Compute the cosine of n.
Shift-C ACOS Compute the arc cosine of n.
T TAN Compute the tangent of n.
Shift-T ATAN Compute the arc tangent of n.
L LOG Compute the logarithm (base 10) of n.
Shift-L ALOG Compute the anti-logarithm (base 10) of
n. Computes 10^n.
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N LN Compute the logarithm (natural) of n.
Shift-N ALN Compute the anti-logarithm (natural) of
n. Computes e^n.
Binary Mode Operations and Commands
+, -, *, / Same as floating point mode except that
you cannot use \ for divide.
\ MOD Calculate X modulo Y, result in X.
& AND Compute X AND Y, result in X.
^ OR Compute X OR Y, result in X.
# XOR Compute X XOR Y, result in X.
L SHL Compute X SHL Y, result in X.
R SHR Compute X SHR Y, result in X.
Lf Arrow Shift current accumulator left by one
bit for each arrow key press.
Rt Arrow Shift current accumulator right by one
bit for each arrow key press.
T Enter ASCII table. The table begins at
the current accumulator value mod 256
(PC-compatible) or 128 (Z-100). Use
these keys to move around in the table:
Keypad 3 (Page Down) Move forward 4 characters.
Keypad 9 (Page Up) Move backward 4 characters.
Keypad 2 (Dn Arrow) Move forward 1 character.
Keypad 8 (Up Arrow) Move backward 1 character.
General Commands
Back Space Used for all entry correction and clear
functions. See the Back Space rules at
the end of this table.
Space bar Reverse the sign of the number in the
current active accumulator. A positive
number becomes negative, and vice versa.
X Exchange the contents of the x and y ac-
cumulators.
Up Arrow Rad: xx Change the radix or display mode to
the next higher one. Radixes and dis-
play modes rotate through following
sequence: binary, base 4, octal, split
octal, decimal, hexadecimal, fixed
point, floating point, scientific nota-
tion, engineering notation. One more up
arrow at engineering notation goes back
to binary.
Dn Arrow Rad: xx Change the radix or display mode to the
next lower one.
MnS M Store current accumulator in memory cell
n. If n is not specified, cell 0 is
used.
MnR M Recall memory cell n into current accu-
mulator.
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MnX M Exchange the contents of the current ac-
cumulator with those of memory cell n.
Cell n must contain a number of the same
type as the accumulator (binary or floa-
ting).
Mn+ M Add the value in the current accumulator
to memory cell n. Cell n must be empty
or contain a number of the same type as
the accumulator (binary or floating).
Mn- M Subtract the value in the current accu-
mulator from memory cell n. See re-
striction for Mn+.
MnC M Clear memory cell n.
MM M Show memory map. Map indicates whether
each cell is empty, or holds a binary or
floating point number.
U Update (refresh) screen display. Use
this command if the display is over-
written by a background program.
F3 Update screen display, and store current
background as background to restore when
HEPCAT exits. (Use only if HEPCAT win-
dow is overwritten.)
Esc Exit HEPCAT and restore old screen.
F1 Exit HEPCAT, but leave its window on the
screen.
F4 (3 times) Remove HEPCAT from memory. See the
restrictions in the instruction manual
before using this command!
Activation Sequences
To activate HEPCAT on a PC-compatible computer, press and release
the right Shift key thee times. To activate it on a Z-100, press
the break key twice.
Back Space and Accumulator Entry Rules
Back Space rule no. 1: If a number on the display is the result
of your entry, Back Space will remove it one digit for each key
press. If the number is the result of something HEPCAT has done,
one press of Back Space will remove the entire number.
Back Space rule no. 2: If the number on the display is the
result of a calculation (as indicated by the = sign on the top
line), one press of the Back Space key will perform a master
clear. That is, the number will be cleared to zero, and the
operation will be cleared to CLR.
Back Space rule no. 3: When you clear a number in the Y ac-
cumulator to zero using Back Space, you can then enter a new
operation. When you do, the accumulator will switch back to X,
and the display will show the number in the X accumulator. How-
ever, if you press Back Space one more time after clearing the Y
accumulator to zero, it will perform a master clear.
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Accumulator entry rule: Any time you type a number after you
have typed an operation key, that number is placed into the Y
accumulator. At other times, the X accumulator is used.
Special Instructions for Zenith Z-171 Users
The HEPCAT instruction manual was written before HEPCAT was
tested on a Z-171. HEPCAT runs on a Z-171, but with the follow-
ing differences from the manual instructions. The Num Lock key
is still active while HEPCAT is popped up. With Num Lock on, the
blue-labeled keys perform their designated functions (in blue)
except for the Memory and Clear keys (M+, M-, MR, MC, CE, and C).
To use the HEPCAT memory functions, use the black-labeled M key
with Num Lock off.
The arrow keys on a Z-171 only function as arrow keys while HEP-
CAT has control if you hold down the left Shift key or the Alt
key. Therefore, the manual instructions for using the arrow keys
on a PC-compatible (without separate arrow keys) hold true on a
Z-171, even though it has separate arrow keys.
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